'''
QAbstractButton 父类
AToolButton
QRadioButton
QCheckBox
'''
from PyQt5.QtGui import QFont, QIcon
from PyQt5.QtWidgets import *
import sys


class QPushButtonDemo(QDialog):
    def __init__(self):
        super(QPushButtonDemo, self).__init__()
        self.iniUI()

    def iniUI(self):
        self.setWindowTitle('QPushButton Demo')
        self.layout = QVBoxLayout()

        self.button1 = QPushButton('第一个按钮')
        self.button1.setText('Button1')
        self.button1.setCheckable(True)
        #  在可检查状态之间切换
        self.button1.toggle()
        self.button1.clicked.connect(lambda: self.whichButton(self.button1))
        self.button1.clicked.connect(self.buttonState)
        self.layout.addWidget(self.button1)

        #  在文本前面显示图像
        self.button2 = QPushButton('图像按钮')
        self.button2.setIcon(QIcon('./images/Python.png'))
        self.button2.clicked.connect(lambda: self.whichButton(self.button2))
        self.layout.addWidget(self.button2)

        self.button3 =QPushButton('不可用的按钮')
        self.button3.setEnabled(True)
        self.layout.addWidget(self.button3)

        self.button4 = QPushButton('&MyButton')
        #  将按钮设置为默认值
        self.button4.setDefault(True)
        self.button4.clicked.connect(lambda: self.whichButton(self.button4))
        self.layout.addWidget(self.button4)

        self.setLayout(self.layout)
        self.resize(400, 300)


    def whichButton(self, btn):
        print(f'被单击的按钮是{btn.text()}')

    def buttonState(self):
        if self.button1.isChecked():
            print('按钮1已经被选中')
        else:
            print('按钮1未被选中')


if __name__ == '__main__':
    app = QApplication(sys.argv)
    main = QPushButtonDemo()
    main.show()
    sys.exit(app.exec_())
